nice ... will try to test this asap. 2009/3/21 Bean <bean12...@gmail.com>: > Hi, > > This patch improves the frame buffer detection algorithm. It uses pci > to find the video memory base, then scan it for frame buffer. > > It also add a loadrom command which can be used to enable accel > graphic driver. The idea is that you can grab the video bios dump, and > optionally the IVT from pc mode, then load them in efi. > > To grab bios dump: > sudo dd if=/dev/mem of=bios.bin bs=65536 skip=12 count=1 > > You can also include the system bios by changing the count to 4. > > To grab IVT dump: > sudo dd if=/dev/mem of=ivt.bin bs=1024 count=1 > > Then, to load them in grub-efi (ivt.bin is optionally): > loadrom /bios.bin /ivt.bin > > Here are some of the findings concerning different video cards: > > Old 32-bit efi model, intel card: > Works with intel driver, no need to load vbios or ivt. > > New 64-bit efi model, intel card: > Works with intel driver, needs to load vbios. > > New 64-bit efi model, nvidia card: > Works with nvidia driver, no needs to load vbios or ivt. However, the > backlight value is set too low so desktop is barely visible. You need > to use a small tool to adjust backlight. The nv driver doesn't work. > > New 64-bit efi model, ati radeon card: > Works with fglrx driver, needs to load vbios and ivt. The radeonhd > driver doesn't work. > > -- > Bean > > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > http://lists.gnu.org/mailman/listinfo/grub-devel > >
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